JP2590064Y2 - Circuit board for electrical equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board for electric equipment.

[0002]

2. Description of the Related Art As a method of arranging two or more electric conductors on an insulating substrate in a circuit board of an electric device, the electric conductors are set in a molding die, and are placed in cavities formed in the molding die. There is a method of inserting a conductor into an insulating substrate by filling a resin material. However, as the number of conductors increases, the task of setting conductors one by one in a molding die becomes extremely troublesome.

[0003] For this reason, a circuit forming body in which a plurality of conductors are connected by a bridge is provided, and the circuit forming body is set in a molding die to form an insulating substrate. To separate individual conductors.

Hereinafter, a conventional example will be described with reference to FIGS. First, as shown in FIG.
A circuit forming body 6 composed of 2, 3, and 4 connected by a bridge 5 is provided. The conductor 1 includes a continuous conductive portion 1a and a connecting portion 1
b, the conductor 2 has continuous conductive portions 2a, 2a 'and a connection portion 2b, the conductor 3 has a continuous conductive portion 3a and a connection portion 3b, and the conductor 4 has a continuous Conductive portions 4a,
4a ′ and a connecting portion 4b.

[0005] Then, the circuit forming body 6 is set in a molding die (not shown), and the cavity of the molding die is filled with a resin. As a result, as shown in FIG. And conductors 1 embedded in the insulating substrate 7
A circuit board 8 composed of 2, 3, and 4 is formed. This circuit board 8 is a terminal base used for a switch in this example. A molding die for molding the insulating substrate 7 holds a bulb (not shown) connected between the conductive parts 1a and 2a 'and a bulb connected between the conductive parts 2a and 4a. The bulb holding section 9 and the connection section 1b,
2b, 3b, 4b, a rectangular tube part 10 surrounding the bridge 5, a through-hole 11 opening both sides of the bridge 5, and a conductive part 3a,
It is configured such that an arc blocking groove 12 located between 4a ′ is formed.

After the insulating substrate 7 is formed, the bridge 5 connecting the conductors 1, 2, 3, 4 is sheared. That is, as shown in FIG. 8, since the upper and lower surfaces of each bridge 5 are exposed by the through-hole 11, the bridge 5 is supported in the lower through-hole 11 by a die (not shown), and the upper through-hole 11 is supported. Then, the bridge 5 is sheared with a punch (not shown). This operation is called a matching cut.

[0007] The circuit board 8 (terminal base) manufactured in this manner is incorporated in a switch case 13 as shown in FIG. The switch case 13 has a movable contact (not shown) for connecting the conductive portions (contacts) 3a and 4a 'exposed on the surface of the insulating substrate 7, and an operation unit (not shown) for moving the movable contact. . Although only one conductor 1 is shown in FIG. 8, the connection portions 1 b, 2 b, 3 b, and 4 b of the conductors 1, 2, 3, and 4 are connected to the connector 14. The connector 14 includes connection portions 1b, 2b, 3b,
4b are connected to an external circuit.
5 and an insulating outer casing 1 surrounding these connection terminals 15.
6, a locking projection 17a is formed on a part of the outer periphery of the outer casing 16, and a locking recess 17b in which the locking projection 17a is elastically locked is formed by a rectangular cylinder of the circuit board 8. It is formed in a part of the part 10.

[0008]

The conventional circuit board 8 is
Even in a state in which the circuit board 8 is incorporated in the switch case 13, the through holes 11 outside the circuit board 8 are exposed to the outside. If the foreign matter is conductive, there is a danger that an electrical short circuit may occur.

[0009]

According to the present invention, a plurality of conductors having a conductive portion connected to an electric circuit and a connecting portion connected to a connector and separated from each other by a separating portion are provided. A circuit board of an electric device including: an insulating substrate that covers the plurality of conductors such that the connection portion is exposed; and when the connection portion is connected to the connector, the separation portion is covered by the connector. I did it.

[0010]

According to this invention, after the insulating substrate is formed, each conductor is divided by the separating portion, but when the connecting portion of each conductor is connected to the connector, the separating portion can be closed by the connector. Becomes

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 6 to 8 will be described using the same reference numerals. First, as shown in FIG.
Circuit forming body 1 consisting of 3, 4 connected by bridge 19
8 is provided. The conductor 1 includes a continuous conductive portion 1a and a connecting portion 1
b, the conductor 2 has continuous conductive portions 2a and 2a 'and a connection portion 2b, the conductor 3 has a continuous conductive portion 3a and a connection portion 3b, and the conductor 4 has a continuous Conductive portions 4a,
4a ′ and a connecting portion 4b.

Then, the circuit forming body 18 is set in a molding die (not shown), and the cavity of the molding die is filled with a resin, as shown in FIG. Then, a circuit board 21 including the conductors 1, 2, 3, and 4 inserted into the insulating board 20 is formed. The circuit board 21 is a terminal base used for a switch in this example. A molding die for molding the insulating substrate 20 includes a bulb 23 (see FIG. 5) connected between the conductive portions 1a and 2a 'and the conductive portions 2a and 4a.
A light bulb holding portion 9 for holding a light bulb 24 (see FIG. 5) connected therebetween, and the connection portions 1b, 2b, 3b, 4b
, A through-hole 22 opening around the bridge 19, and an arc-blocking groove 12 located between the conductive portions 3 a and 4 a ′. I have.

Here, as shown in FIG. 1, the bridges 19 are arranged at positions at the bottom 20a of the rectangular tube portion 10 of the insulating substrate 20 so as to be covered by the tip of the outer casing 16 of the connector 14. Then, after forming the insulating substrate 20, the bridge 19 connecting the conductors 1, 2, 3, and 4 is sheared. That is, as shown in FIG.
Of the bridge 19 is received by a die (not shown), and a punch (not shown) is passed through the through hole 22 from the opposite side.
The bridge 19 is sheared. By this cutting, as shown in FIG. 4, a separation portion 19a is formed between the conductors 1, 2, 3, and 4.

In such a configuration, the circuit board 21
(Terminal base) is incorporated in the switch case 13 as shown in FIG. Then, by fitting the outer casing 16 of the connector 14 to the rectangular tube part 10, the connection part 1b,
Each of 2b, 3b, and 4b is connected to external circuit C shown in FIG. That is, the connection 3b is connected to a power supply 26 via an IG (ignition) switch 25, the connection 1b is connected to an ILL (illumination) terminal 27, and the connection 4a is connected to a load 28.

As described above, the connection portions 1b, 2b, 3b, 4
In a state in which the connector b is connected to the external circuit C, the separation portion 19a for separating the conductors 1 to 4 and the through hole 22 for forming the separation portion 19a are covered by the tip of the outer casing 16 of the connector 14, so that the separation portion Foreign matter can be prevented from entering through the through hole 22 including the hole 19a.

The rectangular tube portion 10 surrounding the connecting portions 1b to 4b is not indispensable, and it is sufficient that the separating portion 19a and the through hole 22 forming the separating portion 19a be covered by the connector 14.

[0017]

According to the present invention, there are provided a plurality of conductors having a conductive portion connected to an electric circuit and a connecting portion connected to a connector, separated from each other by a separating portion, and the conductive portion and the connecting portion. In the circuit board of an electric device including an insulating substrate that covers the plurality of conductors so that the connector is exposed, when the connecting portion is connected to the connector, the separating portion is covered by the connector. After the insulating substrate is formed, each conductor is separated by the separating portion. However, when the connecting portion of each conductor is connected to the connector, the separating portion can be closed by the connector. Foreign matter can be prevented from entering.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view showing a connection relationship between a circuit board and a connector according to an embodiment of the present invention.

FIG. 2 is a perspective view of a circuit forming body.

FIG. 3 is a perspective view of a circuit board before cutting a bridge.

FIG. 4 is a perspective view of a circuit board after forming a separation portion.

FIG. 5 is an external circuit diagram to which a circuit board is connected.

FIG. 6 is a perspective view showing a conventional circuit forming body.

FIG. 7 is a perspective view of a circuit board.

FIG. 8 is a partial vertical side view showing a connection relationship between a circuit board and a connector.

[Explanation of symbols]

 1-4 Conductor 1a-4a Conductor 1b-4b Connection 2a ', 4a' Conductor 14 Connector 19a Separator 20 Insulating substrate

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of conductors having a conductive part connected to an electric circuit and a connecting part connected to a connector, and separated from each other by a separating part, and the conductive part and the connecting part are exposed. As described above, in the circuit board of the electric device including the insulating substrate that covers the plurality of conductors, the separating portion is formed at a position covered by the connector when the connecting portion is connected to the connector. A circuit board for an electric device, characterized by: